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Older vouchers could have been lost over time, so it will be vital for people to take action to search these out or lose their value forever.

Once the vouchers have been found by individuals, they can make use of them online using the code provided.

Alternatively, some Britons will choose to make use of their vouchers in person at a Tesco supermarket.

If doing this, they can print out the vouchers, or use the barcode which is available through the app once they reach the checkout. 

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